From 955d4078d0709372129fb883d3ea4bd6d7ad735e Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Tue, 10 Jan 2023 01:06:48 +0000 Subject: Add s6-instance-list, s6-instance-status (no doc yet) Signed-off-by: Laurent Bercot --- src/libs6/s6_instance_chdirservice.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 src/libs6/s6_instance_chdirservice.c (limited to 'src/libs6/s6_instance_chdirservice.c') diff --git a/src/libs6/s6_instance_chdirservice.c b/src/libs6/s6_instance_chdirservice.c new file mode 100644 index 0000000..356ee20 --- /dev/null +++ b/src/libs6/s6_instance_chdirservice.c @@ -0,0 +1,26 @@ +/* ISC license. */ + +#include +#include + +#include +#include + +#include + +void s6_instance_chdirservice (char const *s) +{ + int fd, r ; + size_t len = strlen(s) ; + char fn[len + 10] ; + if (!*s) strerr_dief1x(100, "invalid service path") ; + memcpy(fn, s, len) ; + memcpy(fn + len, "/instance", 10) ; + if (chdir(fn) == -1) strerr_diefu2sys(111, "chdir to ", fn) ; + fd = open_read(S6_SVSCAN_CTLDIR "/lock") ; + if (fd < 0) strerr_diefu3sys(111, "open ", fn, "/" S6_SVSCAN_CTLDIR "/lock") ; + r = fd_islocked(fd) ; + if (r < 0) strerr_diefu3sys(111, "check lock on ", fn, "/" S6_SVSCAN_CTLDIR "/lock") ; + if (!r) strerr_dief2x(1, "instanced service not running on ", s) ; + fd_close(fd) ; +} -- cgit v1.3.1